EFFECT OF Ni DOPING ON STRUCTURAL AND DIELECTRIC PROPERTIES OF GdFeO3

The polycrystalline samples of GdFe1-xNixO3(x=0.0, 0.1) are prepared by solid state reaction route, their structure is analyzed by powder X-ray diffraction (XRD) and Rietveld refinement. We are also studying the behavior of dielectric constant (e′), tangent loss (tan δ) as a function of frequency from 75 kHz to 5 MHz and AC conductivity (σac) from 75 kHz to 1 MHz for both the compositions at room temperature. It is noticed that Ni3+ ion substitution results in lattice contraction and enhancement in dielectric constant, tangent loss and AC conductivity.